A broadband monitoring system for electromagnetic radiation assessment

F. Mavromatis, Ach. Boursianis, T. Samaras, Ch. Koukourlis and John N. Sahalos

A broadband monitoring system for measuring the total electric field radiated from broadcasting (radio, TV) and communications (mobile telephony, TETRA, WLAN's) systems is presented. The system has been implemented for recording the field on a 24-hour basis. It has an omni-directional sensor antenna and the appropriate electronic circuits. The heart of the system is a low-power, 8bit RISC microcontroller of Microchip, running at 10MHz. With the microcontroller various digital and analogue peripherals are connected. The system can send the data to a personal computer through a USB interface and can communicate through a GSM modem. Low cost and high reliability render the system inexpensive for the deployment of electromagnetic radiation monitoring networks and trustworthy for the public. Several tests of the sensor's pattern, the response linearity and the frequency response have shown that the system can be successfully compared with commercially available ones.